Panarat Charoenchai และ Srunya Vajrodaya. (2014) Taxonomy of the subtribe Ruelliinae (Acanthaceae) in Thailand and its Biological activities. Kasetsart University:ม.ป.ท.Panarat Charoenchai และ Srunya Vajrodaya. 2014. Taxonomy of the subtribe Ruelliinae (Acanthaceae) in Thailand and its Biological activities. ม.ป.ท.:Kasetsart University;Panarat Charoenchai และ Srunya Vajrodaya. Taxonomy of the subtribe Ruelliinae (Acanthaceae) in Thailand and its Biological activities. ม.ป.ท.:Kasetsart University, 2014. Print.